9x^4+8x^2+4=0

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Solution for 9x^4+8x^2+4=0 equation:


Simplifying
9x4 + 8x2 + 4 = 0

Reorder the terms:
4 + 8x2 + 9x4 = 0

Solving
4 + 8x2 + 9x4 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
0.4444444444 + 0.8888888889x2 + x4 = 0

Move the constant term to the right:

Add '-0.4444444444' to each side of the equation.
0.4444444444 + 0.8888888889x2 + -0.4444444444 + x4 = 0 + -0.4444444444

Reorder the terms:
0.4444444444 + -0.4444444444 + 0.8888888889x2 + x4 = 0 + -0.4444444444

Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000
0.0000000000 + 0.8888888889x2 + x4 = 0 + -0.4444444444
0.8888888889x2 + x4 = 0 + -0.4444444444

Combine like terms: 0 + -0.4444444444 = -0.4444444444
0.8888888889x2 + x4 = -0.4444444444

The x term is 0.8888888889x2.  Take half its coefficient (0.4444444445).
Square it (0.1975308642) and add it to both sides.

Add '0.1975308642' to each side of the equation.
0.8888888889x2 + 0.1975308642 + x4 = -0.4444444444 + 0.1975308642

Reorder the terms:
0.1975308642 + 0.8888888889x2 + x4 = -0.4444444444 + 0.1975308642

Combine like terms: -0.4444444444 + 0.1975308642 = -0.2469135802
0.1975308642 + 0.8888888889x2 + x4 = -0.2469135802

Factor a perfect square on the left side:
(x2 + 0.4444444445)(x2 + 0.4444444445) = -0.2469135802

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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